TL431BCDBVT datasheet(19/77 Pages) TI1

19 / 77 page

ANODE

REF

CATHODE

2.4 kΩ

7.2 kΩ

3.28 kΩ

20 pF

4 kΩ

1 kΩ

800 Ω

20 pF

150 Ω

10 kΩ

CATHODE

REF

ANODE

Vref

TL431, TL431A, TL431B

TL432, TL432A, TL432B

www.ti.com

SLVS543O – AUGUST 2004 – REVISED JANUARY 2015

9 Detailed Description

9.1 Overview

This standard device has proven ubiquity and versatility across a wide range of applications, ranging from power

to signal path. This is due to it's key components containing an accurate voltage reference & opamp, which are

very fundamental analog building blocks. TL43xx is used in conjunction with it's key components to behave as a

single voltage reference, error amplifier, voltage clamp or comparator with integrated reference.

TL43xx can be operated and adjusted to cathode voltages from 2.5V to 36V, making this part optimum for a wide

range of end equipments in industrial, auto, telecom & computing. In order for this device to behave as a shunt

regulator or error amplifier, >1mA (Imin(max)) must be supplied in to the cathode pin. Under this condition,

feedback can be applied from the Cathode and Ref pins to create a replica of the internal reference voltage.

Various reference voltage options can be purchased with initial tolerances (at 25°C) of 0.5%, 1%, and 2%. These

reference options are denoted by B (0.5%), A (1.0%) and blank (2.0%) after the TL431 or TL432. TL431 & TL432

are both functionaly, but have separate pinout options.

The TL43xxC devices are characterized for operation from 0°C to 70°C, the TL43xxI devices are characterized

for operation from –40°C to 85°C, and the TL43xxQ devices are characterized for operation from –40°C to

125°C.

9.2 Functional Block Diagram

Figure 23. Equivalent Schematic

Figure 24. Detailed Schematic

Submit Documentation Feedback

Product Folder Links: TL431 TL431A TL431B TL432 TL432A TL432B

TL431BCDBVT 数据表(PDF) 19 Page - Texas Instruments

TL431BCDBVT 数据表(HTML) 19 Page - Texas Instruments

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77

数据表下载